Lawrence Bittaker serial killer dubbed the "Toolbox Killer.” Bittaker was sentenced to death in March 1981 while his accomplice Roy Norris received 45 years to life. Bittaker passed away in prison on December 13, 2019.

8 1/2" x 11" Instant Immersion Heater updated June 3, 2007. 
The word, "rarely" is circled with BS! written next to it. Below Bittaker has written, "Usually defective!" Hand signed LSB.